Screening analysis of solar thermochemical hydrogen concepts.

Diver, Richard B., Jr. ; Kolb, Gregory J.

关键词: CENTRAL RECEIVERS;    EFFICIENCY;    ELECTROLYSIS;    HYDROGEN;    SOLAR ENERGY Solar energy-Research.;    Hydrogen.;    Thermochemical properties.;   

DOI  :  10.2172/1028906
RP-ID  :  SAND2008-1900
PID  :  OSTI ID: 1028906
Others  :  TRN: US201201%%46

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

A screening analysis was performed to identify concentrating solar power (CSP) concepts that produce hydrogen with the highest efficiency. Several CSP concepts were identified that have the potential to be much more efficient than today's low-temperature electrolysis technology. They combine a central receiver or dish with either a thermochemical cycle or high-temperature electrolyzer that operate at temperatures >600 C. The solar-to-hydrogen efficiencies of the best central receiver concepts exceed 20%, significantly better than the 14% value predicted for low-temperature electrolysis.